Smith R S, Chan H, Schaap C J
J Neurocytol. 1985 Apr;14(2):269-78. doi: 10.1007/BF01258452.
Nerve fibres from the sciatic nerve of apparently normal Xenopus laevis were examined in teased preparations of living material and in series of cross-sections. Small-diameter fibres were found that were myelinated in a spatially intermittent fashion. In these fibres, the myelinated segments were separated by long non-myelinated regions that had a 1 : 1 relationship to the investing Schwann cell. It is estimated that at least 10% of the myelinated fibres with an external diameter of less than 5 micrograms were intermittently myelinated.
在活材料的分离标本和一系列横切面上，对外观正常的非洲爪蟾坐骨神经的神经纤维进行了检查。发现了直径较小的纤维，这些纤维以空间间歇性的方式有髓鞘。在这些纤维中，有髓鞘的节段被长的无髓鞘区域隔开，这些无髓鞘区域与包绕的施万细胞呈1:1的关系。据估计，外径小于5微米的有髓鞘纤维中至少10%是间歇性有髓鞘的。
